Here, we analyze energy transformations in the outer hair cell and its effectiveness as a piezoelectric-type actuator in the cochlea. The major modes of energy are introduced, and a method to estimate the coefficients of their tension-dependence is proposed. Next, we derive balance of the mechanical and electrical parts of energy, and show two forms of the active energy associated with the motors driving electromotility. The two forms of the active energy, stored mechanical energy, and external electrical work are then introduced as functions of voltage and applied force. We use the energy balance to introduce and estimate the effectiveness of the cell’s electromotile response.
Modes and Balance of Energy in the Piezoelectric Cochlear Outer Hair Cell Wall
Contributed by the Bioengineering Division for publication in the JOURNAL OF BIOMECHANICAL ENGINEERING. Manuscript received by the Bioengineering Division December 10, 2002; revision received October 10, 2003; Associate Editor: M. Toner.
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Spector , A. A., and Jean, R. P. (March 9, 2004). "Modes and Balance of Energy in the Piezoelectric Cochlear Outer Hair Cell Wall ." ASME. J Biomech Eng. February 2004; 126(1): 17–25. https://doi.org/10.1115/1.1644564
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